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WO1999000890A1 - Moteur a induction - Google Patents

Moteur a induction Download PDF

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Publication number
WO1999000890A1
WO1999000890A1 PCT/JP1998/002934 JP9802934W WO9900890A1 WO 1999000890 A1 WO1999000890 A1 WO 1999000890A1 JP 9802934 W JP9802934 W JP 9802934W WO 9900890 A1 WO9900890 A1 WO 9900890A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
phase
windings
speed
connection
Prior art date
Application number
PCT/JP1998/002934
Other languages
English (en)
Japanese (ja)
Inventor
Kosei Nakamura
Michi Masuya
Hisashi Maeda
Shinpei Ichikawa
Original Assignee
Fanuc Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fanuc Ltd filed Critical Fanuc Ltd
Priority to US09/254,006 priority Critical patent/US6333578B1/en
Priority to DE69825552T priority patent/DE69825552T2/de
Priority to EP98929760A priority patent/EP0923192B1/fr
Publication of WO1999000890A1 publication Critical patent/WO1999000890A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/12—Asynchronous induction motors for multi-phase current
    • H02K17/14—Asynchronous induction motors for multi-phase current having windings arranged for permitting pole-changing

Definitions

  • the present invention relates to an induction motor driven by a three-phase AC power supply, and particularly to an induction motor suitable for a spindle motor driving a main shaft of a machine tool.
  • FIGS. 6a and 6b show a method of changing the characteristics of the motor by changing the winding of the motor between a Y connection and a ⁇ connection.
  • connect the Y-connection terminals X, ⁇ , and ⁇
  • Connect Z and connect the three-phase power lines to terminals U, V, and W) (hereinafter referred to as low-speed winding).
  • the power lines of each phase are connected to terminals U1, VI and W1 so that all windings of each phase are used (hereinafter referred to as low-speed winding). Connect the power lines of each phase to the intermediate terminals U2, V2, W2 during high-speed rotation (hereinafter referred to as high-speed winding). Methods are also known.
  • intermediate terminals X2, Y2, and Z2 are provided between the windings of each phase, and as shown in Fig. 8a during low-speed rotation.
  • one terminal X X, Z of each phase winding is connected, and the other terminals U, V, W are connected to each of the three-phase power lines, and all windings of each phase are used.
  • the windings used are also shown in bold lines in Fig. 8.
  • Y-connection hereinafter referred to as low-speed winding.
  • terminal U is connected to intermediate terminal Z2
  • terminal V is connected to intermediate terminal X2
  • terminal W is connected to intermediate terminal Y2
  • terminals U and V are connected.
  • W are connected to the corresponding three-phase power lines, and only a part of each phase winding is used to form a ⁇ connection (hereinafter referred to as “high-speed winding”).
  • high-speed winding By changing the number of turns, the characteristics of the motor are changed. However, as shown in the relationship between the number of turns and the output curve shown in FIG. Thus, the larger the ratio of the number of turns, the higher the torque at a lower speed, and the higher the output at a higher speed.
  • ⁇ is a value indicating the relationship of the winding number ratio 1: ⁇ .
  • the number of windings used in the high-speed winding is selected (the position at which the intermediate terminal is taken out).
  • the number of windings to be used is determined), and the ratio of the number of windings can be arbitrarily determined.
  • a voltage is applied to the used winding (thick line) in the high-speed winding, an induced voltage is generated in the unused winding. If the sum of the input voltage and the induced voltage at this time exceeds the insulation limit voltage, insulation failure will occur between the windings.Therefore, the maximum number of turns and input will not exceed the insulation limit. The voltage is present, and the maximum turns ratio is determined by itself.
  • the spindle motor for driving the spindle is required to have a low-speed, high-torque output, a high-speed, and a high output, and a large number of turns is required in order to respond to this by switching windings.
  • a large winding ratio was obtained, but even when switching from low-speed winding to high-speed winding, the output characteristics did not drop much and the output torque was not insufficient. Such switching is desired.
  • An object of the present invention is to provide an induction motor capable of obtaining a wide range of high-output characteristics without generating an induced voltage.
  • the partial windings having the same number of turns are three-phase. Two or more for each phase, with either a Y-connection in which the partial windings of each phase are connected in series, a ⁇ -connection in which the partial windings of each phase are connected in series, or a partial winding of each phase connected in parallel.
  • FIG. 1 is an explanatory diagram illustrating the winding configuration of the induction motor of the present invention.
  • FIG. 2 is an explanatory diagram of each winding form in one embodiment of the present invention.
  • FIG. 3 is a circuit diagram of the winding mode switching in the same embodiment
  • FIG. 4 is a circuit diagram of another embodiment of the winding mode switching
  • FIG. 5 is a graph of output characteristics by the winding switching of the present invention.
  • 6 is an explanatory view of an example of conventional winding mode switching
  • FIG. 7 is an explanatory view of another example of conventional winding mode switching
  • FIG. 8 is an explanatory view of another example of conventional winding mode switching
  • Fig. 9 is a graph of the output characteristics by conventional winding switching.
  • FIG. 1 is an explanatory diagram illustrating a winding form of an induction motor according to the present invention.
  • n (n is 2 or more) portions in which windings for each of the three alternating current phases are formed with the same number of turns
  • all the partial windings of each phase are connected in series as shown in Fig. 1a to form a Y connection (hereinafter referred to as low speed). Winding).
  • a low-speed high torque is required, all the partial windings of each phase are connected in parallel as shown in Fig. 1b to form a ⁇ connection (hereinafter referred to as a high-speed winding). ).
  • one terminal of the first partial winding of each winding of U, V, W is U, V, W, and the other terminal is XI, Y1, Z1.
  • One terminal of the second partial winding is U 2, V 2, W 2, and the other terminal is X 2, Y 2, Z 2, one terminal of the (n — 1) th partial winding.
  • the terminals are U n-1, V n-1, Wn-1, the other terminal is X n-1, Yn-1, ⁇ ⁇ -1, and one terminal of the ⁇ -th partial winding is U n, Vn, Wn, and the other terminals are X, Y, Z.
  • a further intermediate winding form is obtained between the low-speed winding and the high-speed winding.
  • the low-speed winding is connected in series with the partial windings of each phase to form a Y connection.
  • partial windings of each phase are connected in series to form a ⁇ connection.
  • partial windings of each phase are connected in parallel as a medium-speed winding to form a Y connection.
  • partial windings of each phase are connected in parallel to form a ⁇ connection.
  • each phase winding is composed of two partial windings, as shown in Figs. 2a to 2d.
  • Figure 2a shows that two partial windings of each phase are connected in series, Example of connecting one terminal X, Y, z of the winding to a neutral point and connecting the other terminals U, V, W to a power line to make a low-speed winding of Y connection It is. Also, as shown in FIG. 2b, the partial windings of each phase are connected in series, the terminals of the series windings of each phase are connected to each other, and a ⁇ connection is formed as a medium-to-low speed winding. In the example shown in Fig. 2b, terminals U and Z, terminals X and V, and terminals Y and W are connected, and this connection point is connected to the power line as a ⁇ connection.
  • terminals connected in parallel are connected to each other, and as a neutral point, the partial winding of each phase is connected in a Y-connection, and the other is connected to the other terminal.
  • the terminals are connected to the power line to form a medium-to-high-speed winding (terminals U and U2, terminals V and V2, terminals W and W2, and the other terminal X, XI, Y, Y 1, Z, Z 1 are all connected to be a neutral point).
  • Figure 2d shows an example of a high-speed winding, where the phase windings of each phase are connected in parallel, and the parallel-connected terminals are connected to the parallel-connected terminals of the other phases.
  • the partial windings of each phase are connected in parallel in a ⁇ connection, and the power lines are connected to the connection points of the terminals of each phase to form high-speed windings (Fig. 2d).
  • terminals U, U2, Z, and Z1 are connected, terminals V, V2, X, and XI are connected, and terminals W, W2, ⁇ , and Y1 are connected.
  • the winding number ratio is as follows.
  • Figure 5 shows the output characteristics of this winding switching in a graph.
  • the switching from the low-speed winding to the high-speed winding covers the drop in output, and a wide range is obtained. This shows that high output characteristics can be obtained.
  • FIG. 3 is a circuit diagram of the winding mode switching when there are two partial windings of each phase shown in FIGS. 2a to 2d.
  • the three-phase power lines from the amplifier 1 that drives the motor are connected via the reactor 2 to the U, V, and W terminals of the motor 3, respectively, and the electromagnetic contactor MCC 1 is connected to the terminal U , V, W and terminals U 2, V 2, W 2, respectively, so that the corresponding terminals are connected, and the magnetic contactor MCC 2 is connected to terminals U 2, V 2, W 2 and terminals XI, Y 1, Connect so that the corresponding terminals are connected between Z1, and connect the magnetic contactor MCC 3 between terminals XI, Y1, Z1 and terminals X, ⁇ , Z, respectively.
  • the magnetic contactor MCC 4 is connected so that the terminals X, Y and Z are all connected, and the magnetic contactor MCC 5 is connected between the terminals XY and Z and the terminals U, V and W respectively. Connected so that the corresponding terminals are connected.
  • MCC 1 MCC 2 CC 3 CC 4 CC 5 Low speed winding OFF ON OFF ON OFF Medium low speed winding OFF ON OFF OFF ON Medium high speed winding ON OFF ON ON OFF High speed winding ON OFF ON OFF ON Low speed high torque required
  • the low-speed winding is selected, the electromagnetic contactors MCC 2 and MCC 4 are turned on, and the other electromagnetic contactors are turned off.
  • the terminals XI and U 2, Y 1 and V 2, ⁇ 1 and W 2 of the partial winding of the motor 3 are connected, as shown in FIG.
  • the partial windings of each phase are connected in series.
  • the electromagnetic contactors MCCC2 and MCCC5 are switched to ON, and the other electromagnetic contactors are switched to OFF.
  • the partial windings of each phase are connected in series by the ON of the electromagnetic contactor MCC2.
  • the terminals U and Z, V and X, and W and Y are connected by the ON of the electromagnetic contactor MCC5.
  • a medium- and low-speed winding configuration of ⁇ connection in which the partial windings of each phase shown in FIG. 2B are connected in series is formed.
  • the magnetic contactor MCC 1 MCC 3 and MCC 4 are turned ON, and other magnetic contactors are turned OFF.
  • the magnetic contactor MCC1 is turned on, the terminals U and U2, V and V2, and W and W2 of the partial winding of the motor are connected.
  • the electromagnetic contactor MCC3 is turned on, the terminal XI of the partial winding is connected.
  • X, Y 1 and Y, Z 1 and Z are connected, and the partial windings of each phase are connected in parallel as shown in FIG. 2c.
  • the electromagnetic contactor MCC 4 is turned on, the terminals X, Y, and Z are connected, and as shown in Fig. 2c, the Y-connection in which the partial windings of each phase are connected in parallel.
  • a high speed winding configuration is formed.
  • the magnetic contactors MCCC1, MCCC3 and MCCC5 are switched to ON, and the other magnetic contactors are switched to OFF.
  • the partial windings of each phase are connected in parallel by the ON of the electromagnetic contactors MCCC1 and MCCC3.
  • the magnetic contactor MCC5 was turned on, the terminals were connected to Z, V and X, W and Y, and the partial windings of each phase were connected in parallel as shown in Fig.2d.
  • a form of high-speed winding with ⁇ connection is formed.
  • the reactor 2 is connected to the output of the amplifier, and the reactor 2 is actuated in any winding form from low-speed winding to high-speed winding.
  • reactors are not always required at low speeds and are only required at high speeds.Therefore, reactors are required only for medium- and high-speed windings and high-speed windings.
  • Figure 4 shows an example of insertion.
  • 2a and 2b indicate reactors, and it is sufficient to insert 2a and 2b for medium- and high-speed windings and high-speed windings. .
  • 2a and 2b must have the same inductance.
  • the electromagnetic contactors MCC 1 and MCC 3 are turned on when the medium and high speed winding and the high speed winding are selected, and are turned off when the low speed winding and the medium and low speed winding are selected. Therefore, it is only necessary to connect a reactor having the same inductance to both the magnetic contactor MCC1 and the magnetic contactor MCC3.
  • a low-speed winding, a medium-low speed winding, a medium-high speed winding, a high-speed winding and a four-stage winding mode from low speed to high speed are obtained.
  • four-stage switching is required.
  • one of the four winding configurations may be omitted and one of the three winding configurations may be selected, as described above.
  • the same number of partial windings are provided for each phase in the same number of windings, and the partial windings of each phase are connected in series or in parallel to form each phase winding.
  • the winding configuration having a different winding number ratio is obtained by connecting the crabs.
  • an induction motor having high reliability under high pressure, high speed, high output, high torque, and low heat generation, as compared with a conventional motor.
  • the output drop during switching can be reduced or reduced, and a wide range of high output characteristics can be obtained.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Induction Machinery (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

La présente invention concerne un moteur à induction exempt de tension induite, et présentant des caractéristiques de puissance élevées dans une large gamme. L'enroulement de chaque phase est constitué d'une pluralité d'enroulements partiels comportant un nombre identique de tours. Pour un régime lent à couple élevé, les enroulements partiels de chaque phase sont commutés en série selon un montage en Y tel que celui de la Figure 2a. Pour un régime lent à intermédiaire, les enroulements partiels de chaque phase sont commutés en série selon un montage en Δ tel que celui de la Figure 2b. Pour un régime intermédiaire à rapide, les enroulements partiels sont commutés en parallèle selon un montage en Δ tel que celui de la Figure 2c. Pour un régime rapide, les enroulements sont commutés en parallèle selon un montage en Δ tel que celui de la Figure 2d. Etant donné qu'on utilise tous les enroulements des phases et que le nombre de tours des enroulements diminue lorsqu'on passe d'un régime lent à un régime plus rapide, on ne trouve aucun enroulement qui reste inutilisé, ce qui fait qu'il n'y a induction d'aucune tension, il est possible de faire face à la chute de puissance lors du basculement de configuration d'enroulements, ce qui permet d'obtenir des caractéristiques de puissance élevées dans toute une large gamme.
PCT/JP1998/002934 1997-06-30 1998-06-30 Moteur a induction WO1999000890A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US09/254,006 US6333578B1 (en) 1997-06-30 1998-06-30 Induction motor
DE69825552T DE69825552T2 (de) 1997-06-30 1998-06-30 Induktionsmotor
EP98929760A EP0923192B1 (fr) 1997-06-30 1998-06-30 Moteur a induction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9187241A JPH1127987A (ja) 1997-06-30 1997-06-30 誘導電動機
JP9/187241 1997-06-30

Publications (1)

Publication Number Publication Date
WO1999000890A1 true WO1999000890A1 (fr) 1999-01-07

Family

ID=16202529

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/002934 WO1999000890A1 (fr) 1997-06-30 1998-06-30 Moteur a induction

Country Status (5)

Country Link
US (1) US6333578B1 (fr)
EP (1) EP0923192B1 (fr)
JP (1) JPH1127987A (fr)
DE (1) DE69825552T2 (fr)
WO (1) WO1999000890A1 (fr)

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JP3837954B2 (ja) * 1999-03-26 2006-10-25 日本精工株式会社 結線パターン切換装置
US6557380B1 (en) 2000-11-15 2003-05-06 Owens-Brockway Glass Container Inc. Apparatus for forming glass containers
JP3633498B2 (ja) * 2001-03-23 2005-03-30 株式会社デンソー 回転電機
KR20030050140A (ko) * 2001-12-18 2003-06-25 현대자동차주식회사 Ｙ－δ결선회로를 이용한 전기자동차의 고속주행 제어장치
JP2004254445A (ja) * 2003-02-20 2004-09-09 Fanuc Ltd 電動機
US6894455B2 (en) * 2003-04-30 2005-05-17 Remy Inc. Performance improvement of integrated starter alternator by changing stator winding connection
US7348703B2 (en) * 2004-08-20 2008-03-25 Dumitru Bojiuc Monopole field electric motor-generator with switchable coil configuration
CN1949655B (zh) * 2005-10-10 2010-05-12 贺雷 电动-发电复用控制方法及其系统
EP1775823B1 (fr) 2005-10-12 2016-12-14 Moteurs Leroy-Somer Machine électrique
FR2891959B1 (fr) * 2005-10-12 2008-07-04 Moteurs Patay Soc Par Actions Machine electrique polyphasee comportant un systeme de commutation pour commuter les elements de bobinage suivant differentes configurations
DE102006058179A1 (de) * 2006-11-30 2008-06-05 Alfred Kärcher Gmbh & Co. Kg Hochdruckreinigungsgerät und Verfahren zur Änderung von dessen Motorleistung
DE102007020706A1 (de) * 2007-05-03 2008-11-27 Airbus Deutschland Gmbh Polumschaltbare Asynchronmaschine für variable Speisefrequenz
CN102290940B (zh) * 2010-06-18 2015-08-19 艾默生电气公司 三相多速电动机的3t-y绕组连接
JP5724567B2 (ja) * 2011-04-14 2015-05-27 株式会社安川電機 交流電動機の巻線切替装置及び交流電動機駆動システム
DE102013221342A1 (de) * 2013-10-21 2015-04-23 Pfeiffer Vacuum Gmbh Elektromotor
WO2017017769A1 (fr) 2015-07-27 2017-02-02 三菱電機株式会社 Machine électrique rotative
DE112017001670T5 (de) * 2016-03-30 2018-12-13 Nidec Corporation Motor
US10978980B2 (en) * 2019-07-08 2021-04-13 Karma Automotive Llc Switched reluctance motor control

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JPS56117563A (en) * 1980-02-20 1981-09-16 Toshiba Corp Rotary machine wherein number of poles can be changed
JPS5989559A (ja) * 1982-11-11 1984-05-23 Toshiba Corp 極数変換三相電機子巻線
JPH066961A (ja) * 1992-06-18 1994-01-14 Fanuc Ltd 三相誘導電動機の巻線切替方式
JPH0646594A (ja) * 1992-02-18 1994-02-18 Mas Fab Rieter Ag カードドラムの回転数を変化させる方法およびカードドラム駆動装置

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JPH01164294A (ja) 1987-12-19 1989-06-28 Fanuc Ltd 工作機械のスピンドル駆動制御装置

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Publication number Priority date Publication date Assignee Title
JPS56117563A (en) * 1980-02-20 1981-09-16 Toshiba Corp Rotary machine wherein number of poles can be changed
JPS5989559A (ja) * 1982-11-11 1984-05-23 Toshiba Corp 極数変換三相電機子巻線
JPH0646594A (ja) * 1992-02-18 1994-02-18 Mas Fab Rieter Ag カードドラムの回転数を変化させる方法およびカードドラム駆動装置
JPH066961A (ja) * 1992-06-18 1994-01-14 Fanuc Ltd 三相誘導電動機の巻線切替方式

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Also Published As

Publication number Publication date
DE69825552D1 (de) 2004-09-16
US6333578B1 (en) 2001-12-25
EP0923192A1 (fr) 1999-06-16
DE69825552T2 (de) 2005-09-15
EP0923192B1 (fr) 2004-08-11
EP0923192A4 (fr) 2002-04-17
JPH1127987A (ja) 1999-01-29

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